Brazil 1818-M 37.5 reis

This specimen was struck at the Minas Gerais mint in Brazil in 1818-21. This unusual denomination was the equivalent of the forty réis which circulated elsewhere in Brazil. In Minas Gerais, a gold mining region, the standard silver coin was the 600 réis, not the 640 réis used elsewhere. There is also a 37½ réis from the empire, issued 1823-28.